Which GPIO are being used by the screen? I doubt you can change the ones it needs so you'll have to change your own GPIO usage if there are any clashes. There is no magic method of preventing clashes.
– joanApr 16 '16 at 22:50

You need to dig up the schematics from the data sheets. Very few of the pins are actually in use (ie. most are NC/no-connect), so when you've got the schematic knowing which pins on the Pi are used, you can simply use jumpers for the necessary pins directly to the display, and use the rest of the pins as you see fit. The block connector is just a convenience thing...
– steviebSep 6 '16 at 19:25

3 Answers
3

This display seems to use a few ports on the gpio as stated on the adafruit's website:

The display uses the hardware SPI pins (SCK, MOSI, MISO, CE0, CE1) as well as GPIO #25 and #24. GPIO #18 can be used to PWM dim the backlight if you like. All other GPIO are unused.

There's also pins you can just use beside the gpio connector for you to use:

There's a 2x16 'classic Pi' connection GPIO header on the bottom, you can connect a 26-pin Pi GPIO cable to it to use any of the other pins as you like. The other GPIO are broken out into solder pads at the bottom, in case you want to use more of the GPIO.